Grumpy Old Man
The really funny thing is the council here in Port Augusta. Hire contractors every year to spray (at rate payers expense of course) our yards. Thing is the Contractors wait until the damned things have gone to seed! Thereby ensuring their work for next year ! So being the killjoy I am , I spray my yard as the weeds come up and then ,when the contractors turn up I politely tell em to Bugger off!Transplant those goatheads in their yard. They will change their tune.
You gotta get the briars too, or they will come back to haunt you.
Me, when contractors turn up to spray weeds. 'NONE SHALL PASS'